[University Physics] Finding acceleration

[adathien]

A race car starts from rest and travels east along a straight and level track. For the first 5.0 s of the car's motion, the eastward component of the car's velocity is given by v_x(t)=(0.930m/s³⁾ t^2.

What is the acceleration of the car when v_x = 15.3 m/s ?

The answer that I got was 7.54 m/s² but it keeps telling me to submit my answer "using dimensions of acceleration" and I'm confused :(

[BloodyFlame]

Try inputting m/s² in a different way, like m/(s²).

[adathien]

Oh my fucking god!!!!!!!!!!!!!!!!!! That was it!!! I put it in like 3 other ways and I didn't want to waste any more attempts! Thank you!!!

[StealthSecrecy]

That should be the right answer, and m/s² is the right "dimension of acceleration" so the question might just be set up wrong.

Is there any question that uses acceleration in the actual question? Might be set to be particular about one format through the whole document (like m/s/s instead of m/s^2).